NUODUN 10Pcs 4" Nylon Fiber Flap Disc Polishing Wheel, 180 Grit Buffing Wheel for Angle Grinder, Abrasive Grinding Discs Scouring Pad, Complex Surface Treatment

I got them to clean up longhorn cattle Shull and horns. They work great and don't scratch up the horn, I have tried many things and these work the best.

The media could not be loaded.  This item is great for cleaning up Metals and aluminum. it’s speed up the process very quickly as I used it on a angle grinder instead of a buffing wheel. Keep in mind that a angle grinder cannot get into all the nooks and cranny. You only need a smaller rotary tip for that. I mainly use this to smooth out the metal and get it ready for buffing.Overall, it’s a great item to have. If you do a lot of polishing work it really does speed up the process very quickly as a angle grinder is very strong and maybe a little too strong. When you are using the angle grinder, you have to be very careful not to shave too much off the metal that you polishing.The wheels lasted pretty long and I only have to use one wheel for my projects. With a 10 pack, it should last a very long time for the average person.The quality seem to be very good, and I wouldn’t hesitate to buy this again.

Great value for the money.

I sharpen a lot of lawnmower blades and I use these to clean the rust and buildup that get on the blades. Works great on other items that I refurbish.

I already had some 4.5" versions of these that I was very impressed with, and saw these were MARGINALLY cheaper. I did not realize that they were 4" rather than 4.5". Once they showed up and I opened the package, I was met with an immediate feeling of disappointment. They were quite notably smaller than the others I had bought for VERY LITTLE additional money. I measured them and they were not quite even 4", I think that they were 3 7/8" or something. Anyway - the product is fine for its intended purpose, but when a 4.5" fits in the tool and costs so close to the same, these just are not worth buying.Best used for buffing, polishing and surface preparation jobs. These are NOT grinding disks. If you expect to do heavy material removal, you will be sad to have spent money on this. If you want to clean something up nicely to prepare for paint or polish, these are the type you need.Flexible, not stiff like some. Better for contours, but they do not last as long.